Notifications: Fix bad layout for long texts

Fixes a bug where the max lines restriction was not properly
passed to ImageFloatingTextView's layout, causing the TextView
to improperly apply bottom padding.

Change-Id: Ibe07515866a4599047712a0482332ed4430c9056
Test: runtest -x core/tests/coretests/src/com/android/internal/widget/ImageFloatingTextViewTest.java
Fixes: 32658499
Bug: 32658499

core/java/com/android/internal/widget/ImageFloatingTextView.java

@@ -71,10 +71,14 @@ public class ImageFloatingTextView extends TextView {
                 .setTextDirection(getTextDirectionHeuristic())
                 .setLineSpacing(getLineSpacingExtra(), getLineSpacingMultiplier())
                 .setIncludePad(getIncludeFontPadding())
-                .setEllipsize(shouldEllipsize ? effectiveEllipsize : null)
-                .setEllipsizedWidth(ellipsisWidth)
                 .setBreakStrategy(Layout.BREAK_STRATEGY_HIGH_QUALITY)
-                .setHyphenationFrequency(Layout.HYPHENATION_FREQUENCY_FULL);
+                .setHyphenationFrequency(Layout.HYPHENATION_FREQUENCY_FULL)
+                .setMaxLines(getMaxLines() >= 0 ? getMaxLines() : Integer.MAX_VALUE);
+        if (shouldEllipsize) {
+            builder.setEllipsize(effectiveEllipsize)
+                    .setEllipsizedWidth(ellipsisWidth);
+        }
+
         // we set the endmargin on the requested number of lines.
         int endMargin = getContext().getResources().getDimensionPixelSize(
                 R.dimen.notification_content_picture_margin);

core/tests/coretests/src/com/android/internal/widget/ImageFloatingTextViewTest.java

@@ -0,0 +1,116 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.internal.widget;
+
+import static org.junit.Assert.assertEquals;
+
+import android.content.Context;
+import android.support.test.InstrumentationRegistry;
+import android.support.test.filters.SmallTest;
+import android.view.View.MeasureSpec;
+import android.widget.TextView;
+
+import org.junit.Before;
+import org.junit.Test;
+
+@SmallTest
+public class ImageFloatingTextViewTest {
+
+    private Context mContext;
+    private ImageFloatingTextView mView;
+    private TextView mTextView;
+
+    @Before
+    public void setup() {
+        mContext = InstrumentationRegistry.getTargetContext();
+        mView = new ImageFloatingTextView(mContext, null, 0, 0);
+        mTextView = new TextView(mContext, null, 0, 0);
+        mTextView.setMaxLines(9);
+    }
+
+    @Test
+    public void testEmpty() {
+        parametrizedTest("");
+    }
+
+    @Test
+    public void testSingleLine() {
+        parametrizedTest("Hello, World!");
+    }
+
+    @Test
+    public void testTwoLine() {
+        parametrizedTest("Hello, World!\nWhat a nice day!");
+    }
+
+    @Test
+    public void testShort() {
+        parametrizedTest("Hello, World! What a nice day! Let's try some more text. "
+                + "Yada yada, yada yada. Lorem ipsum dolor sit amet.");
+    }
+
+    @Test
+    public void testLong() {
+        parametrizedTest("Hello, World! What a nice day! Let's try some more text. "
+                + "Yada yada, yada yada. Lorem ipsum dolor sit amet."
+                + "Yada yada, yada yada. Lorem ipsum dolor sit amet."
+                + "Yada yada, yada yada. Lorem ipsum dolor sit amet."
+                + "Yada yada, yada yada. Lorem ipsum dolor sit amet."
+                + "Yada yada, yada yada. Lorem ipsum dolor sit amet."
+                + "Yada yada, yada yada. Lorem ipsum dolor sit amet."
+                + "Yada yada, yada yada. Lorem ipsum dolor sit amet."
+                + "Yada yada, yada yada. Lorem ipsum dolor sit amet."
+                + "Yada yada, yada yada. Lorem ipsum dolor sit amet."
+                + "Yada yada, yada yada. Lorem ipsum dolor sit amet."
+                + "Yada yada, yada yada. Lorem ipsum dolor sit amet."
+                + "Yada yada, yada yada. Lorem ipsum dolor sit amet."
+                + "Yada yada, yada yada. Lorem ipsum dolor sit amet."
+                + "Yada yada, yada yada. Lorem ipsum dolor sit amet."
+                + "Yada yada, yada yada. Lorem ipsum dolor sit amet."
+                + "Yada yada, yada yada. Lorem ipsum dolor sit amet."
+                + "Yada yada, yada yada. Lorem ipsum dolor sit amet."
+                + "Yada yada, yada yada. Lorem ipsum dolor sit amet."
+                + "Yada yada, yada yada. Lorem ipsum dolor sit amet."
+                + "Yada yada, yada yada. Lorem ipsum dolor sit amet."
+                + "Yada yada, yada yada. Lorem ipsum dolor sit amet."
+                + "Yada yada, yada yada. Lorem ipsum dolor sit amet."
+                + "Yada yada, yada yada. Lorem ipsum dolor sit amet."
+                + "Yada yada, yada yada. Lorem ipsum dolor sit amet."
+                + "Yada yada, yada yada. Lorem ipsum dolor sit amet."
+                + "Yada yada, yada yada. Lorem ipsum dolor sit amet."
+                + "Yada yada, yada yada. Lorem ipsum dolor sit amet."
+                + "Yada yada, yada yada. Lorem ipsum dolor sit amet."
+                + "Yada yada, yada yada. Lorem ipsum dolor sit amet."
+                + "Yada yada, yada yada. Lorem ipsum dolor sit amet."
+                + "Yada yada, yada yada. Lorem ipsum dolor sit amet."
+                + "Yada yada, yada yada. Lorem ipsum dolor sit amet."
+                + "Yada yada, yada yada. Lorem ipsum dolor sit amet.");
+    }
+
+    private void parametrizedTest(CharSequence text) {
+        int heightMeasureSpec = MeasureSpec.makeMeasureSpec(500, MeasureSpec.AT_MOST);
+        int widthMeasureSpec = MeasureSpec.makeMeasureSpec(500, MeasureSpec.EXACTLY);
+
+        mTextView.setText(text);
+        mView.setText(text);
+
+        mTextView.measure(widthMeasureSpec, heightMeasureSpec);
+        mView.measure(widthMeasureSpec, heightMeasureSpec);
+
+        assertEquals(mTextView.getMeasuredHeight(), mView.getMeasuredHeight());
+    }
+}